Matrix elements of ΔI = 3/2K →ππ decays

Ph Boucaud*, V. Giménez, Chi-Jen Lin, V. Lubicz, G. Martinelli, M. Papinutto, C. T. Sachrajda

*Corresponding author for this work

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Abstract

We present a numerical computation of matrix elements of ΔI = 3/2 K → ππ decays by using Wilson fermions. In order to extrapolate to the physical point we work at unphysical kinematics and we resort to Chiral Perturbation Theory at the next-to-leading order. In particular we explain the case of the electroweak penguins O7,8 which can contribute significantly in the theoretical prediction of ε′/ε. The study is done at β = 6.0 on a 243 × 64 lattice.

Original languageEnglish
Pages (from-to)314-316
Number of pages3
JournalNuclear Physics B - Proceedings Supplements
Volume129-130
DOIs
StatePublished - 1 Jan 2004

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    Boucaud, P., Giménez, V., Lin, C-J., Lubicz, V., Martinelli, G., Papinutto, M., & Sachrajda, C. T. (2004). Matrix elements of ΔI = 3/2K →ππ decays. Nuclear Physics B - Proceedings Supplements, 129-130, 314-316. https://doi.org/10.1016/S0920-5632(03)02567-2